In my opinion the best way to quickly drop the price of crude oil is to announce that the US is going to build 30 nuclear reactors in the next decade.
This would send a strong message to the world community that we are serious about energy independence. One of the big perils with electric cars is the lack of availability of infrastructure to charge them.
We need to stabilize the world energy market and this would show everyone that we see serious about getting our house in order.
I know that John McCain has advocated a similar suggestion but I haven’t heard anything of this from Obama.